
Surf Forecasts:
Jaconé surf forecast from 12 Sep 2026:
- Best quality surf: Thursday 17 Sep, 9PM (local time) - 7ft (2.1m), 12s period, S swell with cross-offshore winds.
- Most powerful swell: Thursday 17 Sep, 9PM (local time) - 7ft (2.1m), 12s period, S swell with 1,174 kJ wave energy.
- Next surfable swell (1★+): Saturday 12 Sep, 6PM (local time) - 2ft (0.6m), 11s period with S swell.
Best Forecast Surf Conditions for Jaconé this week:
The surf forecast for Jaconé over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Sep 12) at 6PM. The primary swell is predicted to be 0.6m and 11s period with a secondary swell of 0.5m and 5s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Jaconé in the next 16 days are 2.1m 12s and forecast to arrive on Thursday (Sep 17) at 9PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 5s period and expected on Friday (Sep 18) at 6PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Sat 12th Sep) | 2ft (0.6m) 11s |
| Best Surf | 9PM (Thu 17th Sep) | 7ft (2.1m) 12s |
| Most Powerful | 9PM (Thu 17th Sep) | 7ft (2.1m) 12s |
Table - best surf conditions forecast for Jaconé over the next 16 days.
The Lowdown
Alright, let’s get into it. This is Rusty, and I’m lookin’ at what’s on the menu for Jaconé over the next couple of weeks.
Right off the bat, I gotta be straight with you: the start is a bit of a slow grind. We’ve got a few days of pretty ordinary, poor surf conditions with small, messy swell and cross-onshore winds making a mess of things. For Saturday and Sunday (the 12th and 13th), you’re lookin’ at waves around 2 ft to 3 ft from the S, with periods around 10-12 seconds, but the wind is just not cooperating. The water is a warm 72°, which is about average for this time of year, so no surprises there.
Things start to pick up on Monday the 14th. We get a bit of a bump with clean conditions and light offshore winds in the afternoon. Swell is up to 4 ft from the S, period is short at 8 seconds, so it’s a bit weak and disorganized, but the energy is creeping up. It’s surfable, but not a standout.
Tuesday morning the 15th is where you want to be. That’s the first real highlight in this run. We’ve got glassy conditions, a clean 5 ft swell from the SE, and moderate wave energy. The period is still short (8 seconds), but the glassy surface makes it clean and fun. That’s the pick for the early part of the forecast.
After Tuesday afternoon, the wind turns a bit messy again with some cross-on conditions on Wednesday, and the swell drops back. Thursday the 17th though, now we’re talkin’. Thursday morning and afternoon both look excellent with glassy conditions, a building swell hitting 6 ft to 6 ft from the S, period stretching to 10 seconds, and good energy. That’s the kind of day you check your calendar for.
Friday the 18th sees bigger swell at 5 ft but the wind cranks up to 19 mph offshore, which can make things tricky and bumpy. It’s big, but the conditions get marginal for a good wave.
Saturday the 19th drops back a touch but stays clean with glassy morning conditions and a 4 ft S swell. Sunday the 20th is a sleeper – glassy all day, small waves but clean 3 ft from the SSE. Not a headline, but it’s a session.
Now, here’s the big news for the brave and experienced: around the 24th and 25th of September, we’ve got a pulse of serious size. Swell is predicted to hit 12 ft to 13 ft from the SSW and S, with periods stretching to 13-17 seconds. The energy numbers are huge. But here’s the catch – it’s going to be way too big for this break. This is for experts only, if at all. The wind looks clean and offshore, but the sheer size will make it a heavy, dangerous affair. Not for the faint of heart or the average surfer.
The tail end of the forecast, around Saturday the 26th and Sunday the 27th, delivers the real standout. Saturday sees a still-chunky 7 ft swell from the S, dropping to 6 ft in the afternoon, with a lovely long 14-second period. That’s proper groundswell energy and clean, offshore winds. This is excellent surf for experienced surfers, and it’s a solid couple of days to end the period.
Sunday the 27th settles to a clean 3 ft from the S, but it’s still a great, clean day for a longboard or a cruiser.
So, the two true standouts you gotta circle on your calendar: Tuesday the 15th for a glassy, clean session in the morning, and then Saturday the 26th for the bigger, longer period groundswell with clean conditions. That’s your best bet for quality.
Rusty, out.
Short Range ForecastHeavy rain (total 40mm), heaviest during Mon night. Warm (max 26°C on Sat morning, min 18°C on Mon night). Winds increasing (calm on Sat afternoon, fresh winds from the WSW by Mon night). | Days 4-6 Weather SummaryHeavy rain (total 24mm), heaviest during Tue night. Warm (max 21°C on Tue morning, min 17°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map | |||||||||||||||||||||
Wave Height (m) Direction Period (s) | S 12 | S 11 | S 11 | S 10 | SSW 7 | SSW 8 | S 8 | S 8 | SSE 8 | SE 8 | SE 8 | SSE 9 | S 11 | S 13 | S 12 | S 8 | S 10 | S 11 | S 11 | S 11 | S 11 |
Wave Graph | |||||||||||||||||||||
174 | 116 | 83 | 51 | 105 | 202 | 117 | 205 | 212 | 244 | 191 | 124 | 108 | 199 | 698 | 412 | 640 | 1068 | 525 | 573 | 403 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | on | cross-off | cross-off | cross-off | off | on | glassy | cross-on | glassy | cross-on | on | cross-on | glassy | glassy | off | off | cross-off | off |
High Tide | 3:15PM0.97m | 3:11AM1.10m | 3:31PM0.94m | 3:44AM1.06m | 3:49PM0.92m | 4:19AM0.99m | 4:10PM0.88m | 4:56AM0.91m | 4:35PM0.84m | 5:41AM0.82m | 5:06PM0.79m | 6:47AM0.74m | 5:49PM0.72m | ||||||||
Low Tide | 9:13AM0.02m | 9:18PM0.17m | 9:47AM0.10m | 9:50PM0.15m | 10:21AM0.19m | 10:25PM0.15m | 10:56AM0.29m | 11:03PM0.17m | 11:36AM0.38m | 11:49PM0.21m | 12:27PM0.47m | 00:48AM0.27m | 1:39PM0.53m | 2:05AM0.30m | |||||||
5:50 | — | — | 5:48 | — | — | 5:48 | — | — | 5:47 | — | — | 5:46 | — | — | 5:45 | — | — | 5:43 | — | — | |
— | 5:43 | — | — | 5:43 | — | — | 5:43 | — | — | 5:44 | — | — | 5:44 | — | — | 5:44 | — | — | 5:45 | — | |
mm | — | — | 1 | 2 | 2 | 10 | 1 | 2 | 22 | — | 1 | 18 | 2 | 2 | 1 | — | — | — | — | — | — |
Temp °C | 26 | 25 | 22 | 20 | 20 | 19 | 20 | 21 | 21 | 21 | 20 | 20 | 20 | 20 | 20 | 19 | 19 | 18 | 22 | 22 | 19 |
Feels °C | 25 | 24 | 23 | 21 | 21 | 19 | 22 | 23 | 23 | 22 | 21 | 22 | 19 | 19 | 19 | 20 | 19 | 17 | 19 | 19 | 16 |
Swell 1 Height (m) Direction Period (s) | S 12 | S 11 | S 11 | SSW 5 | SSW 7 | SSW 8 | S 8 | S 8 | SSE 8 | SE 8 | SE 8 | SSE 9 | SSE 8 | S 13 | S 12 | S 8 | S 10 | S 11 | S 11 | S 11 | S 11 |
174 | 116 | 83 | 18 | 105 | 202 | 117 | 205 | 212 | 244 | 191 | 124 | 90 | 199 | 698 | 412 | 640 | 1068 | 525 | 573 | 403 | |
Swell 2 Height (m) Direction Period (s) | E 8 | E 8 | SW 5 | S 10 | S 9 | E 8 | E 8 | E 8 | S 12 | S 11 | S 10 | S 9 | S 11 | S 10 | ESE 8 | ESE 9 | ESE 9 | ESE 9 | S 13 | S 15 | SSE 14 |
43 | 19 | 8 | 51 | 42 | 36 | 36 | 86 | 141 | 191 | 164 | 108 | 108 | 96 | 41 | 54 | 59 | 30 | 170 | 157 | 189 | |
Swell 3 Height (m) Direction Period (s) | ESE 11 | ESE 11 | E 8 | E 8 | E 8 | S 14 | S 13 | S 13 | E 8 | E 8 | ESE 9 | ESE 8 | S 13 | SE 8 | SE 8 | S 14 | E 7 | — | ESE 8 | — | — |
12 | 12 | 20 | 37 | 37 | 16 | 55 | 84 | 46 | 41 | 15 | 51 | 84 | 57 | 31 | 92 | 1 | — | 24 | — | — | |
Wind waves Height (m) Direction Period (s) | WSW 4 | SW 4 | WSW 5 | — | — | E 4 | ESE 5 | E 5 | — | — | SW 5 | SW 5 | SW 5 | SW 6 | — | — | — | E 4 | E 4 | E 5 | E 6 |
21 | 9 | 16 | — | — | 7 | 23 | 25 | — | — | 11 | 18 | 40 | 38 | — | — | — | 27 | 31 | 77 | 83 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 49 | 58 | 66 | 66 | 0 | 10 | 0 | 0 | 66 | 0 | 58 | 0 | 66 | 58 | 77 | 0 | 0 | 0 | 25 | 88 | 25 |
Best forecast wave conditions in Rio de Janeiro | |||||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||||
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Information about the Jaconé Surf forecast
The above surf forecast table for Jaconé provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Jaconé can be found by selecting the local surf guide option on the grey menu. Our Jaconé surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Jaconé) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Jaconé may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Jacone is 14 km (9 miles) from the city of Saquarema. If you plan a holiday in Rio de Janeiro, look for hotels and other accommodation in Saquarema. Saquarema has rooms for a wide range of budgets as well as car hire and transport links.










